Thursday, 26 April 2012

Week 9

Title : Magnet Research Part 1

Objectives : To classify the best magnet to be used

Contents : this week i need to choose what type of magnet that suit with my project. there are several types of magnet that can be find in the world such as permanent magnet, temporary magnet and electromagnet. in this project, i used a permanent magnet and there are four classes of permanent magnets such as Neodymium Iron Boron (NdFeB), Samarium Cobalt (SmCo), Alnico and Ceramic or Ferrite.

 

Results :


In order to make this project successful, magnet is the most important item that needs to be considered. The points that need to be considered in magnet selection are:

i. Magnetic properties.
ii. Corrosion resistance.
iii. Material cost.
iv. Maximum operating temperature.

A good permanent magnet should produce a high magnetic field with a low mass and should be stable against the influences which would demagnetize it. The desirable properties of such magnet are typically stated in terms of remanence and coercive of the magnet material. Alnico, Nd2Fe14B and SmCo magnet are classified as the rare earth permanent magnets and can produce the largest magnetic flux with the smallest mass.

Conclusion : i have to buy the magnet next week.. see u soon...